Beefy Boxes and Bandwidth Generously Provided by pair Networks
Do you know where your variables are?
 
PerlMonks  

Re^2: How to restore from redirecting STDOUT to variable?

by anaconda_wly (Scribe)
on Jan 17, 2013 at 03:34 UTC ( #1013694=note: print w/ replies, xml ) Need Help??


in reply to Re: How to restore from redirecting STDOUT to variable?
in thread How to restore from redirecting STDOUT to variable?

Thanks! What's exactly the "&" means after ">"?


Comment on Re^2: How to restore from redirecting STDOUT to variable?
Re^3: How to restore from redirecting STDOUT to variable?
by Athanasius (Abbot) on Jan 17, 2013 at 04:14 UTC
Re^3: How to restore from redirecting STDOUT to variable?
by mbethke (Hermit) on Jan 17, 2013 at 04:30 UTC

    That you want the file descriptor dup()ed, i.e. get a new file descriptor that refers to the same output stream as STDERR and a Perl-level file handle layered on top of that.

    As the open() perldoc also explains, this is even better written with an '=' after the ampersand:

    open my $save_out, '>&=', \*STDOUT or die "Can't fdopen STDOUT: $!"; open STDOUT, '>&=', $save_out or die "Can't restore STDOUT: $!";
    This avoids creating an all new file descriptor but reuses the system's for a new Perl file handle.

      Great! Thank all!

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1013694]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others rifling through the Monastery: (6)
As of 2015-07-04 22:41 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (60 votes), past polls